Hoist dump



Nov. 8, 1960 H. MAXEN 2,959,312

HOIST DUMP Filed Aug. 8, 1957 '2 Sheets-Sheet 1 INVENTOR. H ARRY MAX EN ATTORNEYS Nov. 8, 1960 H. MAXEN HOIST DUMP Filed Aug. 8, 1957 2 Sheets-Sheet 2 1 1 E7 4 mmvrox.

HARRY MAXEN ATTORNEYS 2,959,312 Patented Nov. 8, 1960 HOIST DUMP Harry Maxen, 2193 Hubbard, Detroit 9, Mich.

Filed Aug. 8, 1957, Ser. No. 677,093

3 Claims. (Cl. 214-713) My invention relates to a new and useful improvement in a hoist dump adapted for lifting and dumping various loose articles.

It is an object of the present invention to provide a structure of this class which will be simple of construction, economical of manufacture, durable, compact and highly efficient in use.

Another object of the invention is the provision of a hoist of this class embodying a carrying scoop which may be elevated by a suitable frame and upon elevating at a predetermined position the scoop may be tipped to discharge the contents therefrom.

Another object of the invention is to provide a mechanism of this class so constructed and arranged that its elevation will be automatically checked after the dumping process and the lowering of the same may also be automatically checked.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of the structure illustrated without departing from the invention and it is intended that the present disclosure shall be considered to be but the preferred embodiment thereof.

Forming a part of this application are drawings in which:

Fig. 1 is a rear elevational view of the invention;

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a top plan view of the invention;

Fig. 4 is a side elevational view of the invention with parts broken away;

Fig. 5 is a fragmentary sectional view taken on line 5-5 of Fig. 1;

Fig. 6 is a sectional view taken on line 6--6 of Fig. 5;

Fig. 7 is a fragmentary elevational sectional view taken on line 7-7 of Fig. 1; and,

Fig. 8 is a fragmentary, broken, elevational view of the structure illustrated in Fig. 4, taken in the direction of the arrow marked 8.

As shown in the drawings, the invention comprises the upwardly supporting standards 14 and 15 extending upwardly from the base 16. At opposite sides of the structure and positioned rearwardly of the standards 14 and 15 are the upwardly extending standards 17 provided, as shown in Fig. 6, with the inwardly extending flanges 19a positioned inwardly from the plate 19, these flanges or members 19a forming a channel 18. This plate 19 is slidable upwardly and downwardly in the space 18 behind the members 19a.

Mounted on the top of the standards 14 and 15 and the oppositely disposed standards 17 is a frame 20 which serves to support a deck 21 having a central opening 22 formed therein, as shown in Fig. 2. Mounted on the top of the deck 21 is an electric motor 22a which serves to drive the shaft 23 on which is mounted a pulley 24. This pulley 24 through the belt 25 drives a pulley 26 mounted on the shaft 27 which extends into the gear box 28. Extending inwardly from the gear box 28, as shown in Fig.

3 is a shaft 29 on which is fixedly mounted the drum or pulley 30 on which winds a flexible cord or cable 31. The shaft 32 as shown in Fig. 1 and Fig. 2 is rotatably connected at its opposite ends to the plates 19 and is secured by a suitable clevis 33 to a bucket 34 which rests upon the angle irons 35, these angle irons 35 being secured to the rod or shaft 32 by the journal knuckles 35a and to the plates 19 by the arms 35b. As shown in Fig. 2 and also in Fig. 4 the bucket 34 has a tapered forward end 36 which serves as a discharge end of this bucket. The horizontal leg of each of the angle irons 35 is cut off at the inner end thereof as indicated by the line 87 in Fig. 2 to permit the bucket to rotate clockwise as viewed in Fig. 2.

A shaft 37 extends between and is connected at its opposite ends to the plates 19 and connected to this shaft is a flexible cable 31 so that as the cable 31 is wound upon the drum 30, the plates 19 will be moved upwardly carrying with them the bucket 34. When the drum 30 is unwound the cable 31 will of course permit the plates 19 and the bucket 34 to move downwardly in response to gravity.

A U-shaped frame comprising the upper bar 38 and the lower bar 39 and the side bars 40 and 41 is swingably mounted by means of the lugs 42 to a shaft 43 which extend between the upright standards 14 and 15. The arms 45 and 46 are connected together by the rod 44 as shown in Fig. 1. Each of these arms is provided at its opposite ends with the forks 48 and 49. As shown in Fig. 2, the forks 48 embrace the rod 37 and the forks 49 embrace the upper bar 38 of the U-shaped frame. A flexible member 47, as a cable or the like, as shown in Fig. 1 and Fig. 2 is connected at its upper end to the deck '21 and at its lower end to the rod 44 which connects the arms 45 and 46 together so that this flexible member 47 serves to limit the downward movement of these arms.

A spring 50 is connected at one end thereof to one of the side bars 40 of the U-shaped member, as by welding at the point marked 85, and at its opposite end to one of the standards 19a, as by welding at the point marked 86 so as to normally retain the shoe-shaped member swung into full line position shown in Fig. 1 and Fig. 2.

As the drum 30 is rotated, the slide plates 19 will move upwardly carrying the bucket 34 upwardly from the full line position shown in Fig. 2 to the dotted line position shown in Fig. 2. As the bucket 34 moves upwardly, it will engage the abutment pins 83 and 84 which project inwardly from the standards 14 and 15. As the upwardly movement continues subsequent to this engagement with the pins 83 and 84, the bucket will be rocked to the dotted line position as shown in Fig. 2. As the slide plates 19 move upwardly, through engagement of the rod 37 in the forks 38, the arms 45 and 46 will move from the full line to the dotted line position shown in Fig. 2, and this will swing the frame embodying the members 38, 39, 40 and 41 to the dotted line position shown in Fig. 2, so that the member 39 will lie beneath the forward or tapered end 36 of the bucket 34. When in this position, the chute 51, which is attached to the lower bar 39, will swing to lie beneath the forward end of the bucket 34 to receive the contents which may be discharged therefrom.

The motor 22a is energized by electric wires which pass through the cable 63 proceeding from the box 62. Associated with this box 62 is a switch housing 60 which is operated by a manually operated switch arm 61. Electric cables pass into this switch housing through the conduits 52, 53 and 54. Interposed in these conduits is the switch housing 55 having a pair of manually operated switches 56 and 57, one of which determines the rotation of the motor 22a in a direction to elevate the bucket and the other of which controlsthe rotation of the motor 22a to permit the lowering of the bucket.

Associated with this conduit is a knock-out switch 58 which is engaged upon the elevation of the bucket so that the switch is openand further elevation of the: bucket is avoided. Associated withthe conduit '53 is also a knockout swit'ch -59 sol that as thetbucket is lowered the switch opens and an operation of the motor in lowering direction is thus avoided.

The box 62 encloses a well-known relay.

'Mounted on each of the plates'19 is a pair of guide wheels-64 having-a peripheral groove which embraces the fianges'19a. These whee-ls64 -serve tosupport the longitudinal movement of the plates 19 when a lateral thrust is delivered-to eitherof these plates.

Api-pe 65 isconnected to-a source of water under pressure and provided with openings 66. The delivery pipe 67 which communicates with the pipe 65 is provided with a valve-"68 normally held spring-closed and movable to open' position upon elevation of the bucket 34 to the dumping or dotted line position shown in Fig. 2. This valve moves to open position by engagement with the member 37. Consequently, as the contents of the bucket 34 are dumped the same are moistened and the bucket itself is cleansed with the stream of water.

Projecting inwardly from the members 14 and 15 are the pins 81 and 82. These pins serve as an abutment so that when the bucket 34 tilts to the right of Fig. 2 a predetermined distance, these pins will engage the bucket walls and prevent further tilting in that direction.

What I claim is:

1. A mechanism of the class described, comprising: a pair of oppositely disposed extending supporting standards; a plate slidably mounted on each of said standards; a lower rod connecting said plates at the lower ends thereof; anupper rod connecting said plates adjacent the upper endsthereof; a bucket rockably mounted on said lower rod and movable upwardly and downwardly in unison therewith; a supporting frame on said lower rod for resisting downward rocking movement of the bucket at the rear endthereof; a cable connected to said upper rod and projecting-upwardly therefrom; a drum for winding and unwinding said cable; means for rotating said drum, the winding of said cable on said drum effecting at raising of said rods and said plates vertically and raising said bucketto a predetermined position; an additional pair of extended standards spaced from said first named standards; an engagement stud projecting inwardly. from the inner face of each of said additional standards for engaging said bucket, upon elevation of the same .to a predetermined distance, for rocking said bucket upwardly at its rear end and downwardly at its-forward end; a rockable frame having an upper bar and a lower bar and rockably mounted on said additional standards between said lower bar and said upper bar; a discharge chute carried on the lower barofsaid rockable frame; a pair of arms forked at each end and engaging-at one end with the upper bar of said frame-and at the other end with said upper rod; a depending flexible support connected at its lower end to said arms adjacent the lower ends thereof, said arms being-normally inclined tothe horizontal and movable upwardlyin unison with said bucket and swingable at their upper ends toward-the horizontal during said movement for rocking said frame for bringing said chute below the end of said bucket.

2. A mechanism of the class described, comprising: a pair of" oppositely disposed extending supporting standards; a plate slidably mounted on each of said standards; a lower rodconnecting said plates at the lower ends thereof; an upper rod connecting said plates adjacent the upper ends thereof; a bucket rockably mounted on said lower rod and movable upwardlyand downwardly in unison therewith;-a supporting frame on said lower rod fortresisting downward rocking movement. of the bucket 81. the rear-end 2 thereof; a: cable connected. to said. HPPBr 4 rod and projecting upwardly therefrom; a drum for winding and unwinding said cable; means for rotating said drum, the winding of said cable on said drum effecting a raising of said rods and said plates vertically and raising said bucket to a predetermined position; an additional pair of extended standards spaced from said first named standards; an engagement stud projecting inwardly from the inner face of each of said additional standards for engaging said bucket, upon elevation of the same to a predetermined distance, for rocking said bucket upwardly at its rear'end-anddownwardly at its forward end; a rockable frame having an upper bar and a lower bar and rockably mounted onsa-idadditional standards between said lower bar and said upper bar; a discharge chute carried on the lower bar of said rockable frame; a pair of arms forked at each end and engaging at one end with the upper bar of said frame and at the other end with said upper rod; a depending flexible support connected at its lowerendto-said arms adjacent the lower ends thereof, saidarms being normally inclined to the horizontal and movable upwardly in unison with said bucket and swingable at their upper ends toward the horizontal during said movement for rocking said frame for bringing said chute below the end of said bucket;.and a spring, upon lowering of said bucket, for swinging said frame in the opposite direction.

3. A mechanism of the. class described, comprising: a pair of oppositelydisposed extending supporting standards; a plate slidably mounted .on each of said standards; a lower rod connecting said. plates at the lower ends thereof; an upper rod connecting said plates adjacent the upper. ends thereof; a bucket .rockably mounted on said lower rod and movable upwardly and downwardly in unison therewith; a supporting frame on said lower rod for resisting downward rocking movement of the bucket at the rear end thereof; a cable connected to said upper rod andprojecting upwardly therefrom; a drum for winding and unwinding said cable; means for rotating said drum, the winding ofsaid cable on said drum effecting a raising of said rods and .said .plates vertically and raising said bucket to a predetermined position; an additional pair of extended standards spaced from said first named standards; an engagement stud projecting inwardly from the inner face of each of said additional standards for engaging. said bucket, upon elevation of the same to a predetermined distance, .for rocking said bucket upwardly at its rear end andtdownwardly at its forward end; a rockable frame having an upper bar and a lower bar and rockably mounted onsaid additional standards between said lower bar and said upper bar; a discharge chute carried on thelower-bar. of said rockable-frame;.a pair of. arms forked at. each. end: and engaging at one end with the upper bar of said frame and at the other end with said upper rod; a depending flexible support connected at its lower end to said. armsadjacent the lower ends thereof, said arms being normally inclined to the horizontal and movable upwardly in unison with said bucket and swingable at theirupper ends toward the horizontal during said movement for rocking said frame for bringing said chute below the. end of. said bucket; and a spring, upon lowering of said bucket,.for swinging saidframe in the opposite direction; abutmentrmeanslon said second named standards for limiting swinging movement of said frame in responseto thetension of said spring.

' References Cited in the file of this patent UNITED. STATES PATENTS WAY 14-3, Wm 

